This document analyzes the initial base year (2016) model output for the TRMG2 against the TRMv6.2. Note: The TRMG2 2016 base year will be updated to the 2020 upon final delivery, however the interim delivery of the 2016 network is useful to analyze the TRMG2 assignment in comparison to the TRMv6.2. Note, as the TRMG2 model includes the expansion into Alamance and Johnston Counties, county level totals may deviate from totals in TRMv6.2.
Overall, takeaways include:
- Assignment on MPO and County levels are much closer to count totals, an improvement on TRMv6.2
- Even with introduction of Alamance and Johnston county expansions, traffic assignment better matched TRMv6.2
- Transit assignment was particularly improved, especially for GoTriangle, NCSU and Duke routes
- Two screenlines and one cutline representing I-85, I-40 and the Downtown Durham Loop were manually added into the network to evaluate performance; each were within the targer range.
- VMT is 5% higher in TRMG2, mainly originating from Wake County, which may cause concern
Base Year (2016) Comparison
Volume - Total Daily Flow
MPO
TRMv6.2 Total Volume by MPO
|
MPO_Tag
|
Total_Volume
|
Total_Counts
|
Count
|
PctDiff
|
|
CAMPO
|
31804488
|
33161360
|
2322
|
-0.0426629
|
|
DCHC
|
15768182
|
16117220
|
1140
|
-0.0221356
|
|
None
|
4956044
|
4885010
|
918
|
0.0143327
|
|
Total
|
52528714
|
54163590
|
4380
|
-0.0311235
|
TRMG2 Total Volume by MPO
|
MPO_Tag
|
Total_Volume
|
Total_Counts
|
Count
|
PctDiff
|
|
CAMPO
|
33974991
|
33307230
|
2367
|
0.0196545
|
|
DCHC
|
16686192
|
16299307
|
1166
|
0.0231860
|
|
None
|
5455538
|
5949920
|
1047
|
-0.0906203
|
|
Total
|
56116721
|
55556457
|
4580
|
0.0099839
|
County
Note totals may not equal from MPO to County due to links missing either MPO or County label in TRMG2 or TRMv6.2
TRMv6.2 Total Volume by County
|
COUNTY
|
Total_Volume
|
Total_Counts
|
Count
|
PctDiff
|
|
alamance
|
0.0
|
0
|
0
|
NaN
|
|
chatham
|
845870.5
|
800100
|
142
|
0.0541105
|
|
durham
|
12016012.0
|
12616470
|
809
|
-0.0499715
|
|
franklin
|
979763.4
|
1091880
|
225
|
-0.1144323
|
|
granville
|
674119.0
|
673990
|
138
|
0.0001914
|
|
harnett
|
728257.7
|
593780
|
144
|
0.1846567
|
|
johnston
|
3509072.8
|
3440690
|
440
|
0.0194874
|
|
nash
|
124308.5
|
110000
|
29
|
0.1151050
|
|
orange
|
4007723.6
|
3709140
|
421
|
0.0745020
|
|
person
|
644518.2
|
820930
|
186
|
-0.2737112
|
|
wake
|
28884130.1
|
30195530
|
1808
|
-0.0454021
|
|
Total
|
52413775.8
|
54052510
|
4342
|
-0.0312653
|
TRMG2 Total Volume by County
|
County
|
Total_Volume
|
Total_Counts
|
Count
|
PctDiff
|
|
alamance
|
875218.15
|
918000
|
61
|
-0.0488814
|
|
chatham
|
912262.99
|
830880
|
145
|
0.0892100
|
|
durham
|
12969703.99
|
12761537
|
828
|
0.0160503
|
|
franklin
|
1020690.38
|
1052190
|
221
|
-0.0308611
|
|
granville
|
628106.70
|
702670
|
134
|
-0.1187112
|
|
harnett
|
652223.98
|
585480
|
140
|
0.1023329
|
|
johnston
|
3436414.09
|
3686610
|
505
|
-0.0728073
|
|
nash
|
66200.31
|
58670
|
30
|
0.1137504
|
|
orange
|
3925944.75
|
3705250
|
447
|
0.0562144
|
|
person
|
527404.48
|
825020
|
191
|
-0.5643022
|
|
wake
|
31020631.33
|
30336900
|
1846
|
0.0220412
|
|
Total
|
56034801.14
|
55463207
|
4548
|
0.0102007
|
FC_Group
TRMv6.2 Total Volume by Facility
|
FCGROUP_Tag
|
Total_Volume
|
Total_Counts
|
Count
|
PctDiff
|
|
Local
|
4735796
|
4655830
|
1130
|
0.0168854
|
|
Collector
|
6441994
|
6623550
|
1084
|
-0.0281832
|
|
Minor Arterial
|
13151478
|
13397660
|
1015
|
-0.0187189
|
|
Major Arterial
|
13835061
|
15284820
|
763
|
-0.1047888
|
|
Freeway
|
14257957
|
14084500
|
349
|
0.0121656
|
|
Total
|
52422286
|
54046360
|
4341
|
-0.0309806
|
TRMG2 Total Volume by Facility
|
HCMType
|
Total_Volume
|
Total_Counts
|
Count
|
PctDiff
|
|
TLHighway
|
814139.5
|
716100
|
79
|
0.1204210
|
|
Local
|
1217696.3
|
1164780
|
453
|
0.0434561
|
|
MajorCollector
|
1300728.7
|
1364260
|
274
|
-0.0488428
|
|
MLHighway
|
2394673.5
|
2297000
|
115
|
0.0407878
|
|
Collector
|
2644544.0
|
2879440
|
820
|
-0.0888229
|
|
Arterial
|
13139758.1
|
13604123
|
1601
|
-0.0353404
|
|
Freeway
|
14787505.0
|
14060257
|
359
|
0.0491799
|
|
MajorArterial
|
19678396.5
|
19331197
|
876
|
0.0176437
|
|
Total
|
55977441.5
|
55417157
|
4577
|
0.0100091
|
Cutline/Screenlines
Added one cutline (Downtown Durham Loop) and two screenlines (I-85 and I-40) for further evaluation of the TRMG2 assignment.
TRMG2 Screenlines:
TRMv6.2 Total Volume by Screenline
|
SL_Tag
|
Total_Volume
|
Total_Counts
|
Count
|
PctDiff
|
|
I-40
|
1366435.5
|
1364840
|
76
|
0.0011676
|
|
I-85
|
373408.4
|
397900
|
37
|
-0.0655894
|
|
Wake/Durham County Line
|
623487.9
|
660500
|
34
|
-0.0593629
|
TRMv6.2 Total Volume by Cutline
|
Cut_Line
|
Cutline
|
Total_Volume
|
Total_Counts
|
Count
|
PctDiff
|
|
Southwest Durham
|
1
|
218687.56
|
208500
|
9
|
0.0465850
|
|
Downtown Durham Loop
|
2
|
502879.52
|
548200
|
40
|
-0.0901219
|
|
Johnston County
|
4
|
315294.98
|
290390
|
31
|
0.0789895
|
|
Chatham County
|
5
|
42745.66
|
40600
|
5
|
0.0501960
|
|
North Raleigh
|
7
|
723814.37
|
744890
|
38
|
-0.0291175
|
|
Eastern Wake
|
8
|
466298.95
|
514800
|
37
|
-0.1040128
|
|
US-1 South
|
9
|
253017.13
|
257800
|
15
|
-0.0189033
|
|
North Wake
|
11
|
265991.52
|
249600
|
21
|
0.0616242
|
|
Along US 70
|
12
|
190236.92
|
227800
|
8
|
-0.1974542
|
|
Along I440E and W of I-40
|
13
|
388798.87
|
409900
|
13
|
-0.0542726
|
|
Chatham/Wake Line
|
14
|
63151.99
|
60370
|
9
|
0.0440524
|
|
Wake/Harnett Line
|
15
|
68517.06
|
54400
|
12
|
0.2060371
|
|
US 64 East
|
16
|
43101.54
|
36400
|
9
|
0.1554827
|
|
Durham/Orange Line
|
17
|
356132.96
|
328880
|
23
|
0.0765247
|
TRMG2 Total Volume by Screenline and Cutline
|
Screen_Line
|
ScreenlineNum
|
Total_Volume
|
Total_Counts
|
Count
|
PctDiff
|
Type
|
|
Wake/Harnett Line
|
1
|
87572.97
|
74580
|
22
|
0.1483673
|
Screen
|
|
Wake/Johnston Line
|
2
|
292293.58
|
244950
|
32
|
0.1619727
|
Screen
|
|
Wake/Franklin
|
3
|
114286.73
|
106250
|
21
|
0.0703208
|
Cut
|
|
Wake/Durham
|
4
|
389170.25
|
393300
|
29
|
-0.0106117
|
Cut
|
|
Southern Durham/Chatham
|
5
|
61967.55
|
50400
|
6
|
0.1866711
|
Cut
|
|
Durham/Orange
|
6
|
375870.26
|
327600
|
25
|
0.1284227
|
Screen
|
|
Durham + Orange/Person
|
7
|
21941.43
|
23770
|
7
|
-0.0833389
|
Cut
|
|
Durham/Granville
|
8
|
63843.34
|
55500
|
4
|
0.1306846
|
Cut
|
|
Downtown Durham Loop
|
9
|
519814.68
|
518300
|
39
|
0.0029139
|
Cut
|
|
I-40
|
10
|
1430275.89
|
1374840
|
76
|
0.0387589
|
Cut
|
|
I-85
|
11
|
337677.77
|
367600
|
35
|
-0.0886118
|
Cut
|
VMT
MPO
TRMv6.2 Total VMT by MPO
|
MPO_Tag
|
Total_VMT
|
|
CAMPO
|
34546729
|
|
DCHC
|
14516717
|
|
None
|
7864112
|
|
Total
|
56927559
|
TRMG2 Total VMT by MPO
|
MPO_Tag
|
Total_VMT
|
|
CAMPO
|
36385516
|
|
DCHC
|
14649340
|
|
None
|
8731138
|
|
Total
|
59765995
|
County
TRMv6.2 Total Volume by County
|
COUNTY
|
Total_VMT
|
|
alamance
|
0.0
|
|
chatham
|
1887084.2
|
|
durham
|
9579639.4
|
|
franklin
|
1482186.2
|
|
granville
|
1311675.1
|
|
harnett
|
1099687.9
|
|
johnston
|
6071384.1
|
|
nash
|
250834.7
|
|
orange
|
5220110.2
|
|
person
|
726642.3
|
|
wake
|
29143576.4
|
|
Total
|
56772820.5
|
TRMG2 Total Volume by County
|
County
|
Total_VMT
|
|
alamance
|
993303.3
|
|
chatham
|
1908876.6
|
|
durham
|
9896837.6
|
|
franklin
|
1562436.3
|
|
granville
|
1176954.3
|
|
harnett
|
1001411.4
|
|
johnston
|
5819437.0
|
|
nash
|
199840.0
|
|
orange
|
5146945.8
|
|
person
|
592546.6
|
|
wake
|
31202620.1
|
|
Total
|
59501209.1
|
FC_Group
TRMv6.2 Total Volume by Facility
|
FCGROUP_Tag
|
Total_VMT
|
|
Local
|
5886949
|
|
Collector
|
6356286
|
|
Minor Arterial
|
8656589
|
|
Major Arterial
|
11077322
|
|
Freeway
|
20640977
|
|
Total
|
52618123
|
TRMG2 Total Volume by Facility
|
HCMType
|
Total_VMT
|
|
TLHighway
|
1391382
|
|
MajorCollector
|
1419038
|
|
Local
|
1535881
|
|
Collector
|
3105077
|
|
MLHighway
|
3187588
|
|
Arterial
|
10850355
|
|
MajorArterial
|
10872446
|
|
Freeway
|
23010932
|
|
Total
|
55372698
|
Volume Group
TBD - working on this
Transit
Please excuse the lower case, it helps join the observed to the V6 outputs.
TRMv6.2 Total Transit Ridership by TOD
|
OPERATOR
|
Total_OP
|
Total_PK
|
Total_Trips
|
Observed
|
PctDev
|
|
cat
|
9899.0531
|
13954.4857
|
23853.5388
|
24114
|
-0.0108012
|
|
cht
|
13394.6948
|
16401.7934
|
29796.4883
|
26356
|
0.1305391
|
|
ctran
|
1189.5224
|
1407.4559
|
2596.9783
|
1001
|
1.5943839
|
|
data
|
11359.4352
|
11927.1762
|
23286.6113
|
21472
|
0.0845106
|
|
duke
|
3715.8149
|
4301.9723
|
8017.7872
|
14321
|
-0.4401378
|
|
ncsu
|
7252.3925
|
4621.1928
|
11873.5852
|
16530
|
-0.2816948
|
|
opt
|
325.1405
|
251.0703
|
576.2108
|
0
|
Inf
|
|
tta
|
2793.9636
|
14240.5786
|
17034.5422
|
8997
|
0.8933580
|
|
Total
|
49930.0170
|
67105.7252
|
117035.7421
|
112791
|
0.0376337
|
TRMG2 Total Transit Ridership by TOD
|
Agency
|
AM
|
MD
|
PM
|
NT
|
Total
|
|
Chapel Hill Transit
|
6316.585946
|
5778.59395
|
8539.814055
|
5899.50712
|
26534.501080
|
|
Chatham Transit
|
2.209048
|
0.00000
|
1.573097
|
0.00000
|
3.782145
|
|
Duke
|
2878.575769
|
2577.41527
|
3505.813238
|
2674.82429
|
11636.628570
|
|
GoCary
|
394.533364
|
652.47471
|
631.363632
|
627.44636
|
2305.818063
|
|
GoDurham
|
3353.605610
|
7191.61067
|
5607.917597
|
6150.10307
|
22303.236948
|
|
GoRaleigh
|
4432.955456
|
7506.93100
|
7744.810579
|
6272.74533
|
25957.442371
|
|
GoRaleigh/GoTriangle
|
137.381167
|
0.00000
|
247.138422
|
0.00000
|
384.519589
|
|
GoTriangle
|
4589.713367
|
2654.05478
|
7258.499514
|
2264.16985
|
16766.437513
|
|
NCSU Wolfline
|
3410.702171
|
3456.39717
|
3808.595557
|
3841.87703
|
14517.571935
|
|
Orange County Public Transit
|
24.042385
|
30.09061
|
8.247979
|
33.30049
|
95.681463
|
Sensitivity Tests
Nonmotorized Test
Overview
The nonmotorized test removed the entire American Tobacco Trail from the network. Inputs from the 2016 base year were kept exactly the same. Total TAZ level nonmotorized trips are compared to the base year with American Tobacco Trail included to this test scenario below. Outputs analyzed include nonmotorized trips and VMT to determine TRMG2 sensitivity to scenario testing.
Takeaways/Questions:
- After removing the American Tobacco Trail, NM trips increased overall albeit very slightly. This may seem counterintuitive after removing the largest NM pathway in the model region.
- Removal of ATT should impact the walkability and/or approach density used in accessibility calculation
Nonmotorized Trips
Difference in NM Trips
|
County
|
Test NM Trips
|
Base NM Trips
|
Difference
|
|
Alamance
|
5,084
|
5,103
|
-19
|
|
Chatham
|
9,692
|
9,687
|
4
|
|
Durham
|
59,464
|
59,431
|
33
|
|
Franklin
|
11,210
|
11,219
|
-8
|
|
Granville
|
6,473
|
6,480
|
-6
|
|
Harnett
|
7,284
|
7,280
|
4
|
|
Johnston
|
35,014
|
35,015
|
-1
|
|
Nash
|
832
|
829
|
3
|
|
Orange
|
27,168
|
27,205
|
-37
|
|
Person
|
6,621
|
6,630
|
-9
|
|
Wake
|
206,298
|
206,156
|
142
|
|
Total
|
375,141
|
375,035
|
106
|
Difference in NM Trips
|
ClusterName
|
Test NM Trips
|
Base NM Trips
|
Difference
|
|
Cary
|
51,033
|
50,966
|
67
|
|
Chapel Hill
|
16,444
|
16,463
|
-19
|
|
Durham
|
28,576
|
28,578
|
-2
|
|
Garner
|
20,223
|
20,235
|
-12
|
|
Northeast
|
53,775
|
53,809
|
-34
|
|
Northwest
|
24,850
|
24,896
|
-46
|
|
Raleigh
|
64,851
|
64,792
|
59
|
|
RTP
|
1,710
|
1,722
|
-12
|
|
South
|
21,986
|
21,934
|
53
|
|
Southeast
|
48,117
|
48,121
|
-4
|
|
Southern Durham
|
36,133
|
36,081
|
52
|
|
Southwest
|
7,443
|
7,440
|
3
|
|
Total
|
375,141
|
375,035
|
106
|
VMT
Difference in VMT
|
MPO_Tag
|
Test VMT
|
Base VMT
|
Difference
|
|
CAMPO
|
36,378,762
|
36,385,516
|
-6,755
|
|
DCHC
|
14,651,595
|
14,649,340
|
2,255
|
|
None
|
8,729,036
|
8,731,138
|
-2,102
|
|
Total
|
59,759,393
|
59,765,995
|
-6,602
|
Difference in VMT
|
County
|
Test VMT
|
Base VMT
|
Difference
|
|
alamance
|
993,211
|
993,303
|
-92
|
|
chatham
|
1,908,338
|
1,908,877
|
-539
|
|
durham
|
9,899,289
|
9,896,838
|
2,452
|
|
franklin
|
1,559,040
|
1,562,436
|
-3,396
|
|
granville
|
1,176,813
|
1,176,954
|
-142
|
|
harnett
|
1,001,558
|
1,001,411
|
147
|
|
johnston
|
5,815,859
|
5,819,437
|
-3,578
|
|
nash
|
199,951
|
199,840
|
111
|
|
orange
|
5,146,474
|
5,146,946
|
-472
|
|
person
|
592,024
|
592,547
|
-522
|
|
wake
|
31,202,005
|
31,202,620
|
-615
|
|
Total
|
59,494,563
|
59,501,209
|
-6,646
|
Transit Test
Overview
The transit test was conducted to determine the TRMG2 transit assignment sensitivity when headway is halved for all routes. This was done by reducing the headway across all four periods (AM, MD, PM, NT) in the the master_routes (keeping values =-1 constant) by 0.5. Transit ridership and VMT are summarized compared to the base 2016 model results. The edited headway for selected transit routes are shown below:
Takeaways/Questions:
- Halving headway across all transit lines and TOD resulted in sensible increase in transit ridership (+29%)
- VMT also decreased by 0.38% relative to total 2016 BY.
- VMT appears to remain sticky
Transit Test Headway
|
Route_Name
|
AMHeadway
|
MDHeadway
|
PMHeadway
|
NTHeadway
|
Agency
|
|
TT 301 EB:RTP-Moore Sq
|
15
|
-1
|
15
|
-1
|
GoTriangle
|
|
TT 300 EB:RTP-Moore Squ
|
15
|
-1
|
15
|
-1
|
GoTriangle
|
|
TT 300md EB:RTP-Moore Squ
|
-1
|
30
|
-1
|
30
|
GoTriangle
|
|
TT 305 IB:Apex-Moore Sq
|
26
|
-1
|
26
|
-1
|
GoTriangle
|
|
CHT A-Limited
|
15
|
-1
|
15
|
-1
|
Chapel Hill Transit
|
|
CHT CW OB:JonesFerry-Pittsboro
|
15
|
30
|
15
|
30
|
Chapel Hill Transit
|
|
CHT CW IB:Pittsboro-JonesFerry
|
15
|
30
|
15
|
30
|
Chapel Hill Transit
|
|
CHT CM IB:FamPrac-JonesFerry
|
23
|
25
|
23
|
25
|
Chapel Hill Transit
|
|
CHT CM OB:JonesFerry-FamPrac
|
23
|
25
|
23
|
25
|
Chapel Hill Transit
|
|
CHT CPX EB
|
9
|
-1
|
9
|
-1
|
Chapel Hill Transit
|
|
CHT CPX WB
|
9
|
-1
|
9
|
-1
|
Chapel Hill Transit
|
|
CHT FCX OB:FridayCntr-Pittsboro
|
4
|
15
|
4
|
15
|
Chapel Hill Transit
|
|
CHT FCX IB:Pittsboro-FridayCntr
|
4
|
15
|
4
|
15
|
Chapel Hill Transit
|
|
CHT J OB:RckCrkApts-JonesFerry
|
8
|
10
|
8
|
10
|
Chapel Hill Transit
|
|
CHT J IB:JonesFerry-RockCrkApt
|
7
|
10
|
7
|
10
|
Chapel Hill Transit
|
Base Headway
|
Route_Name
|
AMHeadway
|
MDHeadway
|
PMHeadway
|
NTHeadway
|
Agency
|
|
TT 301 EB:RTP-Moore Sq
|
30
|
-1
|
30
|
-1
|
GoTriangle
|
|
TT 300 EB:RTP-Moore Squ
|
30
|
-1
|
30
|
-1
|
GoTriangle
|
|
TT 300md EB:RTP-Moore Squ
|
-1
|
60
|
-1
|
60
|
GoTriangle
|
|
TT 305 IB:Apex-Moore Sq
|
52
|
-1
|
52
|
-1
|
GoTriangle
|
|
CHT A-Limited
|
30
|
-1
|
30
|
-1
|
Chapel Hill Transit
|
|
CHT CW OB:JonesFerry-Pittsboro
|
30
|
60
|
30
|
60
|
Chapel Hill Transit
|
|
CHT CW IB:Pittsboro-JonesFerry
|
30
|
60
|
30
|
60
|
Chapel Hill Transit
|
|
CHT CM IB:FamPrac-JonesFerry
|
46
|
49
|
46
|
49
|
Chapel Hill Transit
|
|
CHT CM OB:JonesFerry-FamPrac
|
46
|
49
|
46
|
49
|
Chapel Hill Transit
|
|
CHT CPX EB
|
18
|
-1
|
18
|
-1
|
Chapel Hill Transit
|
|
CHT CPX WB
|
18
|
-1
|
18
|
-1
|
Chapel Hill Transit
|
|
CHT FCX OB:FridayCntr-Pittsboro
|
8
|
30
|
8
|
30
|
Chapel Hill Transit
|
|
CHT FCX IB:Pittsboro-FridayCntr
|
8
|
30
|
8
|
30
|
Chapel Hill Transit
|
|
CHT J OB:RckCrkApts-JonesFerry
|
15
|
20
|
15
|
20
|
Chapel Hill Transit
|
|
CHT J IB:JonesFerry-RockCrkApt
|
13
|
20
|
13
|
20
|
Chapel Hill Transit
|
Transit Ridership
Transit Test Scenario Total Transit Ridership by TOD
|
Agency
|
AM
|
MD
|
PM
|
NT
|
Total
|
|
Chapel Hill Transit
|
6272
|
7085
|
9121
|
7063
|
29540
|
|
Chatham Transit
|
9
|
0
|
4
|
0
|
13
|
|
Duke
|
2961
|
2492
|
3395
|
2579
|
11429
|
|
GoCary
|
640
|
1319
|
1062
|
1128
|
4149
|
|
GoDurham
|
4652
|
10400
|
7387
|
8608
|
31048
|
|
GoRaleigh
|
6946
|
11709
|
11691
|
9380
|
39726
|
|
GoRaleigh/GoTriangle
|
223
|
0
|
366
|
0
|
589
|
|
GoTriangle
|
7224
|
3973
|
10223
|
3243
|
24663
|
|
NCSU Wolfline
|
3360
|
3356
|
3730
|
3747
|
14193
|
|
Orange County Public Transit
|
35
|
77
|
19
|
77
|
208
|
|
Total
|
32324
|
40412
|
46998
|
35824
|
155558
|
TRMG2 Total Transit Ridership by TOD
|
Agency
|
AM
|
MD
|
PM
|
NT
|
Total
|
|
Chapel Hill Transit
|
6317
|
5779
|
8540
|
5900
|
26535
|
|
Chatham Transit
|
2
|
0
|
2
|
0
|
4
|
|
Duke
|
2879
|
2577
|
3506
|
2675
|
11637
|
|
GoCary
|
395
|
652
|
631
|
627
|
2306
|
|
GoDurham
|
3354
|
7192
|
5608
|
6150
|
22303
|
|
GoRaleigh
|
4433
|
7507
|
7745
|
6273
|
25957
|
|
GoRaleigh/GoTriangle
|
137
|
0
|
247
|
0
|
385
|
|
GoTriangle
|
4590
|
2654
|
7258
|
2264
|
16766
|
|
NCSU Wolfline
|
3411
|
3456
|
3809
|
3842
|
14518
|
|
Orange County Public Transit
|
24
|
30
|
8
|
33
|
96
|
|
Total
|
25540
|
29848
|
37354
|
27764
|
120506
|
Difference Transit Test - TRMG2
|
Agency
|
AM
|
MD
|
PM
|
NT
|
Total
|
|
Chapel Hill Transit
|
-44
|
1,306
|
581
|
1,163
|
3,006
|
|
Chatham Transit
|
7
|
0
|
2
|
0
|
9
|
|
Duke
|
83
|
-85
|
-110
|
-95
|
-208
|
|
GoCary
|
246
|
666
|
431
|
501
|
1,844
|
|
GoDurham
|
1,299
|
3,209
|
1,779
|
2,458
|
8,745
|
|
GoRaleigh
|
2,513
|
4,202
|
3,946
|
3,107
|
13,768
|
|
GoRaleigh/GoTriangle
|
85
|
0
|
119
|
0
|
204
|
|
GoTriangle
|
2,634
|
1,319
|
2,964
|
979
|
7,896
|
|
NCSU Wolfline
|
-50
|
-100
|
-79
|
-95
|
-325
|
|
Orange County Public Transit
|
11
|
47
|
11
|
44
|
112
|
|
Total
|
6,784
|
10,564
|
9,644
|
8,060
|
35,052
|
VMT
Difference in VMT
|
MPO_Tag
|
Test VMT
|
Base VMT
|
Difference
|
|
CAMPO
|
36,236,800
|
36,385,516
|
-148,716
|
|
DCHC
|
14,579,174
|
14,649,340
|
-70,166
|
|
None
|
8,724,707
|
8,731,138
|
-6,431
|
|
Total
|
59,540,681
|
59,765,995
|
-225,314
|
Difference in VMT
|
County
|
Test VMT
|
Base VMT
|
Difference
|
Percent Difference
|
|
alamance
|
992,849.9
|
993,303.3
|
-453.38
|
-0.05
|
|
chatham
|
1,903,260.7
|
1,908,876.6
|
-5,615.90
|
-0.29
|
|
durham
|
9,844,999.3
|
9,896,837.6
|
-51,838.29
|
-0.52
|
|
franklin
|
1,560,202.8
|
1,562,436.3
|
-2,233.55
|
-0.14
|
|
granville
|
1,175,184.8
|
1,176,954.4
|
-1,769.60
|
-0.15
|
|
harnett
|
1,001,145.4
|
1,001,411.4
|
-266.04
|
-0.03
|
|
johnston
|
5,816,968.3
|
5,819,437.0
|
-2,468.68
|
-0.04
|
|
nash
|
199,823.8
|
199,840.0
|
-16.21
|
-0.01
|
|
orange
|
5,130,367.4
|
5,146,945.8
|
-16,578.44
|
-0.32
|
|
person
|
592,233.1
|
592,546.6
|
-313.48
|
-0.05
|
|
wake
|
31,059,203.1
|
31,202,620.1
|
-143,417.05
|
-0.46
|
|
Total
|
59,276,238.5
|
59,501,209.1
|
-224,970.62
|
-0.38
|